FT847

Procedure.

1. Disconnect all cables and connectors from your radio.
2. Remove the carry handle by taking out the two screws at each end of the handle.
3. Remove the other two screws on the opposite side of the radio.
4. Remove the two screws from the rear of the radio, that hold the top and bottom covers.
5. Remove the remaining two screws from the bottom cover near the front panel.
6. Now you can remove the bottom cover from the radio.
7. Place the radio on a clean surface with the top of the radio facing down.
8. Place the front panel towards you.
9. Now you should be able to see the Lithium battery to the top left hand side of the PCB.
10. Look closely and you will see 6 small surface mount resistors just below the battery and to the left.
11. They are labeled on the PCB as 1,2,3,4,5 & 6 (See photo below).
12. You need to configure the resistors as in the photo below.
13. After re-configuring the resistors double check your work and then replace all covers.
14. Finally you need to make a note of any memory channels you have programmed including offsets etc.
15. As the CPU needs resetting to acknowledge the new configuration.
16. To reset the radio's CPU make sure the radio is OFF, then press and hold the and button's and turn the radio ON.
17. Remember all the contents of the memory channels will be reset and lost. Also the Automatic Repeater Shift (ARS) will be lost.
18. But all you need to do is, to reprogram the offset from the Menu option No:16 (10mtrs) Menu No:17 (6mtrs) Menu No:18 (2mtrs) and Menu No:19 (70cms)

Notes from photo above

1. The photo shows the radio AFTER the modifications.
2. "In place" means that the resistor must be fitted in this location.
3. "Solder link" means that you must solder a bridge across pad No3 if no resistor fitted.
4. "Out" means remove any resistor from this location.

The coverage of the radio

after the modification.

Receiver (the same as before the modification)

Band         Min RX freq.   Max RX freq.

H.F.                    100KHz             37MHz

VHF (A)             37MHz             76MHz

VHF (B)           108MHz           174MHz

UHF                 410MHz           512MHz

Transmitter

Band         Min TX freq.   Max TX freq.

H.F.                    1.8MHz             37MHz

VHF (A)             37MHz             76MHz

VHF (B)           137MHz           174MHz

UHF                 410MHz           470MHz

If you decide to carryout the same modification on your FT847, then you do so at your own risk.  

This modification verified to work on the following serial numbers:   

8C020XXX     8G051XXX    8G060XXX    8H080XXX     8I100XXX    8J120XXX   8K130XXX    8K150XXX   8K151XXX    8L160XXX     

Configuration of Chip Resistors.

As far as I know the information is correct, however proceed at your own risk.

For HF, 6mtrs and 4mtrs  range see table below.